The xenacanth shark neurocranium, with comments on elasmobranch monophyly. Bulletin of the AMNH ; v. 169, article 1

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dc.contributor.author Schaeffer, Bobb, 1913- en_US
dc.date.accessioned 2005-10-06T14:49:34Z
dc.date.available 2005-10-06T14:49:34Z
dc.date.issued 1981 en_US
dc.identifier.uri http://hdl.handle.net/2246/1056
dc.description 66 p. : ill. ; 26 cm. en_US
dc.description Includes bibliographical references (p. 62-66). en_US
dc.description.abstract "The neurocranium of the shark Xenacanthus (sensu lato) from the early Permian of Texas shares derived characters with the neurocrania of various other Paleozoic shark genera, including Tamiobatis, 'Cladodus,' 'Ctenacanthus,' Cladoselache, and with Hybodus and the living neoselachians. These characters are consistent with the hypothesis that the above extinct and the living taxa belong to the monophyletic group Elasmobranchii. Xenacanthus and Tamiobatis are proposed as sister taxa related to 'Cladodus' and possibly to 'Ctenacanthus' from the Cleveland shale. The details of Xenacanthus and Tamiobatis cranial morphology are based on three-dimensional specimens, both whole and sectioned'--P. [4]. en_US
dc.format.extent 19755401 bytes
dc.format.mimetype application/pdf
dc.language eng en_US
dc.language.iso en_US
dc.publisher New York : American Museum of Natural History en_US
dc.relation.ispartofseries Bulletin of the American Museum of Natural History ; v. 169, article 1 en_US
dc.subject.lcc QH1 .A4 vol.169, art.1, 1981 en_US
dc.subject.lcsh Xenacanthus -- Anatomy. en_US
dc.subject.lcsh Tamiobatis -- Anatomy. en_US
dc.subject.lcsh Skull. en_US
dc.subject.lcsh Sharks, Fossil -- Texas. en_US
dc.subject.lcsh Fishes, Fossil -- Texas. en_US
dc.subject.lcsh Chondrichthyes -- Classification. en_US
dc.subject.lcsh Paleontology -- Permian -- Texas. en_US
dc.subject.lcsh Paleontology -- Texas. en_US
dc.title The xenacanth shark neurocranium, with comments on elasmobranch monophyly. Bulletin of the AMNH ; v. 169, article 1 en_US
dc.type text en_US

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  • Bulletin of the American Museum of Natural History
    The Bulletin, published continuously since 1881, consists of longer monographic volumes in the field of natural sciences relating to zoology, paleontology, and geology. Current numbers are published at irregular intervals. The Bulletin was originally a place to publish short papers, while longer works appeared in the Memoirs. However, in the 1920s, the Memoirs ceased and the Bulletin series began publishing longer papers. A new series, the Novitates , published short papers describing new forms.

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